Enhanced atomic co-magnetometry for inertial sensing
Lead Research Organisation:
University of Birmingham
Department Name: School of Physics and Astronomy
Abstract
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Publications
Bevington P
(2024)
Optical control and coherent coupling of spin diffusive modes in thermal gases
in Physical Review Research
| Description | Quantum science and technology devices exploiting collective spins in thermal gases are extremely appealing due to their simplicity and robustness. This comes at the cost of dealing with the random thermal motion of the atoms which is usually an uncontrolled source of decoherence and noise. There are however conditions, for example when diffusing in a buffer gas, where thermal atoms can occupy a discrete set of stable spatial modes. We have: - studied diffusive modes in alkali atoms, individuating the conditions for signal-to-noise optimimation of an atomic magnetometer - studied the dynamics of higher-order modes in presence of a gradient field, with the observation of a strong coupling regime between modes - studied and characterized the main features of diffusive modes in noble gases, with the observation of a PT-symmetry breaking transition in presence of a light gradient in miniature cells |
| Exploitation Route | Our funding will provide new powerful strategies for the optimization and stabilization of atomic magnetometers and gyroscopes, also in miniature cells. |
| Sectors | Aerospace Defence and Marine |
| Description | NPL Squeezing and fundamental physics |
| Organisation | National Physical Laboratory |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | I have investigated non-linear effects leading to coherence transfer and spin-squeezing for achieving improved sensitivity in optically pumped atomic magnetometers. |
| Collaborator Contribution | Partners have assisted with the experimental measurements and contributed with knowledge exchange. |
| Impact | - Papers: R. Gartman, V. Guarrera, G. Bevilacqua, and W. Chalupczak, Phys. Rev. A 98, 061401(R) (2018) V. Guarrera, R. Gartman, G. Bevilacqua, G. Barontini, and W. Chalupczak, Phys. Rev. Lett. 123, 033601 (2019) - Additional grant submissions: 1) UK-Space (2019) 2) STFC-EPSRC call for Quantum Technologies for Fundamental Physics (under consideration) |
| Start Year | 2018 |